Method of building up a resilient tread or tire.



G. D. ROSE. METHOD OF BUILDING UP A RBSILIENT TRBAD 0R TIRE.

APPLIOATION FILED 0OT.15, 1910.

Patented Oct. 8, 1912.

3 SHEETS-SHBBT 1.

f WITNESSES.

lNVENTOR. 6%607 6.3. .3066. J?

G. D. ROSE.

METHOD OF BUILDING UP A RESILIENT TREAD OR TIRE.

APPLIGATION FILED 00'r.15, 1910.

1,0%O,765. Patented Oct. 8, 191.2.

3 SHEETS-SHEET 2 Fig.6.

Fig.2.

WWNESSES.

G. D. ROSE.

METHOD OF BUILDING UP A RESILIENT TREAD 0R TIRE.

APPLIOATION FILED 0017.15, 1910.

Patented Oct. 8, 1912 a SHEETS-$111111 a.

INVENTOR. 7 as 4 WW ESSES.

ll t PAT METHOD 0! BUILDING U1 A RESILIE'NT TREAZD OR TIRE.

Specification of Letters Patent.

Patentedflct .8, 1912.

'e umum filediflctober 15, 1910. .Serial No. tamer.

Be it known that I, Gnonen DAUBNEY Rose, a British subject, residing at Lower Broughton, Salford, Manchester, county .of Lancaster, England, have invented certain new and useful Improvements in Methods of-Building up a Resilient Tread or Tire, of

which the following is :a specification.

This invention relates to improvements in the manufacture of resilient 'tireseither pneumatic or solidfor the wheels of vehicles. These tires have been made in a great variety of ways with canvas and looped fabrics embedded in rubber to increase the Wearing properties, such fabrics having been prepared trom cotton, wool, flax, and coir fibers.

in'carry-ing out this invention it is referred to employ or cocoanut ber though material prepared from any other fibers may be employed.

It consists essentially in building up a tread or tire of a number .of laps or layers of rope or fabric comprising strands .of coir or other fiber (or of strips of Woven fabric) coated or saturated with rubber or rubber composition placed in continuous zi -za dionmation over a number of pins .an hel in position by inextensible cords or 'equ-iva 4 lents interlaced circumferentially, thezigzag loops or layers of material being highly compressed laterally to consolidate the mass and secured by transverse binding cords or e uivalents inserted into the holes or spaces (irom which the pins have been removed).

The invention will be fully described with reference to the accompanying drawings forming part of the specification.

' a Figure l is a plan illustrating the method verse section of t e of building up the tread of a pneumatic tire. Fig. 2 is a transverse section taken on the line wzv of Fi 1. 'Fig. 3 is a transtread showin the method of compressing the layers 0 fiber laterally, Fig. 4 is a transverse section of the finished tread for a pneumatic tire. Fi 5 is a plan illustrating the method of buil ing up a solid tire. Fig. 6 is a transverse section of same on line yy Fig. 5. Fig. 7 i is a plan partly in section of either a solid the or the tread of a pneumatic tire.

The coir or other fiber from which the tread or tire is to be built u is pre ared in the form of yarns or stran s and t ese are coated, saturated or impregnated with rubceptacle conta'inin her or rubber composition or rubber substitute in any ordinar wa such aszb i ssing the strands thrriiigh a trough nethe prepared rubber or other solution. The yarns or strands thus prepared are .bunched together or pleated or twisted into a rope or fiabric A of suitable J thickness and length. This may be pressed =01 flattened if desired but at present I find that the strands can be best employed It? being first laid together and held by .the .a' laesion of a the rubber or other solution.

The fabric or rope thus prepared or .a fabric prepared from two or more plies of canvas or other material woven solid and treated with rubber is employed to build up the tire or tire tread in the following manner. There is first constructed a frame of c rcular form comprising a metal or other plate D of suitable size with a number of pins 03 projecting therefrom placed closely hoop or ring .the outerperiphe forms the tread of the tire. wo, three or more lagers of the rope or fabric A are built up in t is way one on to of or beside the other according to the width of the tire or tread, a coating of rubber orlike solution be ing inserted between each layer. Between each la er of the rope or fabric A binding cords or small ropes of hemp, cotton or other fiber are interwoven around both circles of pins and made inextensible and practically endless in any convenient manner. The binding cords E serve to take the stress or pull circumferentially around the tire to prevent any liability of the zigzag loops or folds expanding or bein drawn out of place.

In the case of solid tires which are much thicker than pneumatic, three, four or more rows of pins d may be employed in the frame plate D and a corresponding number of binding cords E may be inserted between each layer of the rope or fabric A, see Fig.- 6, and additionalstra'nds A are inserted to fill up the periphery.

When the tread or tire is completed, it, together with the pins d. is removed from \Oofwhich the frame plate D and placed in. a presslsee pressed together (in a direction lateral to the tire) to consolidate the fibers and the rubber with which they are impregnated into a solid homogeneous and compact structure. While thus held under pressure the means of a hooked needle f or otherwise a lateral binding cord F is inserted in the holes or spaces from which the pins d have been withdrawn and is connected by a lock stitch to a similar cord F on the opposite side of the tire or tread. The lateral binding cords F F lie at right angles to'the binding cords E andsecurely bind together the several layers A of rope or fabric which. go to build up the tire or tread. The binding cords F and .F' are inserted after removal of the product in partially completed condition from the press, pands or springs outwardly, the fibers being held in their compressed state by the adhesive qualities of the rubber with which they are impregnated.

For the cords E, F and F wire may be substituted. 7

The solid tire may be mounted on a base of rubber or other material or may be simply pressed into the shape required for the tire.

For treads for pneumatic tires as in Fig. 4 bunches or strands G may be securedv by the binding cords E and extend down both sides to adhere to the canvas backing H of the tire and secure the tread firmly thereto and on the underside of the tread a layer or sheet K pins d are successively withdrawn and by.

but before the material ex of rubber, may be vulcanized thereto. Further a layer is of rubber or canvas may be applied to both sides of the tread in the usual way. The whole tread ortire thus built up. is vulcanized in a suitable mold or press in the ordinary way.

If preferred thetread or tire may be partially vulcanized while being compressed or before releasing the pressure after the-insertion of the lateral binding cords F F and the vulcanizing be completed at a second operation.

What I do claim as my invention and desire to protect by Letters Patent is or tread from strips of ru n v canvas or other suitable material which consists in winding the said strips side 1 by side in zigzag loops pins on a suitable frame, to produce a plurality of parallel layers, weaving 'and interlacing pins and consolidating the layers sure, withdrawing said pins, and inserting around a series of inextensible binding cords about said i I and between said layers, compressing by lateral pres-- 1 binding cords through the transverse openings produced by the withdrawal of the pins 1 to secure said layers together.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

- GEORGE DAUBNEY RO SE.

Witnesses:

I. OWDEN OBRIEN, Geo. H. (.YBRIEN.

so The method of building 131p a resilient tige er-coate stran s 

